<template>
  <el-container class="main-container">
    <!-- 头部区域 -->
    <el-header>
      <!-- 左侧的 logo -->
      <img src="../../assets/images/logo.png" alt="" />
      
      <!-- 右侧的菜单 -->
      <el-menu
        class="el-menu-top"
        mode="horizontal"
        background-color="#23262E"
        text-color="#fff"
        active-text-color="#409EFF"
      >
        <el-submenu index="1">
          <template slot="title">
            <!-- 头像 -->
            <img :src="userInfo.user_pic" alt="" v-if="userInfo.user_pic" class="avatar"/>
            <img src="../../assets/logo.png" alt="" class="avatar" v-else/>
            <span>个人中心</span>
          </template>
          <el-menu-item index="1-1"><i class="el-icon-s-operation"></i>基本资料</el-menu-item>
          <el-menu-item index="1-2"><i class="el-icon-camera"></i>更换头像</el-menu-item>
          <el-menu-item index="1-3"><i class="el-icon-key"></i>重置密码</el-menu-item>
        </el-submenu>
        <el-menu-item @click="logout" index="2"><i class="el-icon-switch-button"></i>退出</el-menu-item>
      </el-menu>
    </el-header>
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside width="200px">
        <div class="user-box">
          <img :src="userInfo && userInfo.user_pic ?  userInfo.user_pic : defaultAvatar" />
          <span>欢迎 {{userInfo && userInfo.username}}</span>
        </div>

        <!-- 左侧菜单 -->
        <el-menu
          default-active="$route.path"
          class="el-menu-vertical-demo"
          background-color="#23262E"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          router
        >

          <template v-for="item in menus">

            <!-- 不包含子菜单的“一级菜单” -->
            <el-menu-item :key="item.indexPath" v-if="!item.children"  :index="item.indexPath"><i :class="item.icon"></i>{{ item.title }}</el-menu-item>

            <!-- 包含子菜单的“一级菜单” -->
            <el-submenu :key="item.indexPath" v-else :index="item.indexPath">
                <template slot="title">
                  <i :class="item.icon"></i>
                  <span>{{ item.title }}</span>
                </template>

                <el-menu-item v-for="menu in item.children" :key="menu.indexPath" :index="menu.indexPath">
                  <i :class="menu.icon"></i>{{menu.title}}
                </el-menu-item>
            </el-submenu>

          </template>
          

        </el-menu>
      </el-aside>

      <el-container>
        <!-- 页面主体区域 -->
        <el-main>
          <router-view/>
        </el-main>
        <!-- 底部 footer 区域 -->
        <el-footer>© www.itheima.com - 黑马程序员</el-footer>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
import { mapActions, mapState } from 'vuex'
import defaultAvatar from '@/assets/logo.png'

export default {
  name: 'Main',
  data() {
    return {
      defaultAvatar,
      menus: []
    }
  },
  created() {
    // 判断用户是否已经登陆
    if(this.token) {
      // 触发获取数据
      this.getUserInfo(),
      // 触发获取菜单数据
      this.initMenu()
    } else {
      this.$router.push('/login')
    }
    
  },
  computed: {
    ...mapState(['userInfo', 'token'])
  },
  methods: {
    ...mapActions(['getUserInfo']),

    logout() {
    // console.log('click');
    // 1.提示是否退出
    this.$confirm('确认要退出吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        // 点击确定触发
        this.$store.commit('updateToken', '')  // 取消token
        this.$router.push('/login')  // 跳转页面
      }).catch(() => {
        // 点击取消触发
          this.$message({
          type: 'info',
          message: '已取消删除'
        });          

      })

    },

    async initMenu() {
      const res = await this.$http.get('/my/menus')
      if(res.data.code === 0 ) {
        this.menus = res.data.data
      }
    } 

  }
}
</script>

<style lang="less" scoped>
.main-container {
  height: 100%;
  .el-header,
  .el-aside {
      .el-submenu,
      .el-menu-item {
        width: 200px;
        user-select: none;
      }
    background-color: #23262e;
  }
  .el-header {
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  .el-main {
    overflow-y: scroll;
    height: 0;
    background-color: #F2F2F2;
  }
  .el-footer {
    background-color: #eee;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  // 左侧边栏用户信息区域
  .user-box {
    height: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-top: 1px solid #000;
    border-bottom: 1px solid #000;
    user-select: none;
    img {
      width: 35px;
      height: 35px;
      border-radius: 50%;
      background-color: #fff;
      margin-right: 15px;
      object-fit: cover;
    }
    span {
      color: white;
      font-size: 12px;
    }
  }
}

.avatar {
  border-radius: 50%;
  width: 35px;
  height: 35px;
  background-color: #fff;
  margin-right: 10px;
  object-fit: cover;
}
</style>
